Final answer:
The truth of the statement about setting a National record in weightlifting by exceeding the current record by at least 500g depends on the rules of the sport's governing body, which can vary.
Step-by-step explanation:
The statement regarding setting a new National record by exceeding the current record by at least 500g is not universally true and can vary depending on the specific rules of a sports federation or organization. Therefore, without specific context regarding the sport or the body governing the record, the true or false nature of this statement cannot be definitively answered.
In the case of weightlifting, for instance, incremental increases to set a new record are often governed by the regulations of the sport's official body, and these increments can vary. It is common for weight categories to have specific rules about the smallest increment by which a record can be broken, but these may not necessarily be 500g.